1992 Toyota Corolla Service & Repair Manual
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AIR CONDITIONING SYSTEM
– AIR CONDTIONING
AC–1
GENERAL INFORMATION
1. WHEN HANDLING REFRIGERANT (R–12), FOLLOWING
PRECAUTIONS MUST BE OBSERVED
(a) Do not handle refrigerant in an enclosed area or near
an open flame.
(b) Always wear eye protection.
(c) Be careful that liquid refrigerant does not get in your
eyes or on your skin.
If liquid refrigerant gets in your eyes or on your skin;
• Do not rub.
• Wash the area with a lot of cool water.
• Apply clean petroleum jelly to the skin.
• Go immediately to a physician or hospital for profes-
sional treatment.
• Do not attempt to treat yourself.
(d) Discharge refrigerant from the charging valve before
installing the new compressor.
If the refrigerant is not discharged first, compressor oil
will spray out with the refrigerant gas when the plug is
removed.
(e) Do not use a burner for bending or lengthening op-
erations on tubes.
If tubes are heated with a burner, a layer of oxidation
forms inside the tube, causing the same kind of
trouble as an accumulation of dust.
3. WHEN TIGHTENING CONNECTING PARTS;
(a) Apply a few drops of compressor oil to O–ring fittings
for easy tightening and to prevent leaking of refrig-
erant gas.
(b) Tighten the nut using two wrenches to avoid twisting
the tube.
2. WHEN REPLACING PARTS ON REFRIGERANT LINE;
(a) Discharge refrigerant slowly before replacement.
(b) Insert a plug immediately in disconnected parts to
prevent entry of moisture and dust.
(c) Do not leave a new condenser or receiver, etc., lying
around with the plug removed.
– AIR CONDTIONING General Information
AC–2
6. WHEN HANDLING REFRIGERANT CONTAINER (SERVICE
CAN);
(a) Must never be heated.
(b) Must be kept below 40°C (104°F).
(c) If warming service can with hot water, be careful that the
valve on top of the service can is never immersed in the
water, as the water may permeate into the refrigerant
cycle.
(d) Empty service cans must never be re–used.
7. WHEN A/C IS ON AND REFRIGERANT GAS IS BEING
REPLENISHED;
(a) If there is not enough refrigerant gas in the refrigerant
cycle, oil lubrication becomes insufficient and compres-
sor burnout may occur, so take care to avoid this.
(b) If the valve on the high pressure side is opened, refriger-
ant flows in reverse and causes the service can to rup-
ture, so only open and close the valve on the low pres-
sure side.
(c) If the service can is inverted and refrigerant is inserted in
a liquid state, the liquid is compressed and the compres-
sor breaks down, so the refrigerant must be inserted in
a gaseous state.
(d) Be careful not to insert too much refrigerant gas, as this
causes trouble such as inadequate cooling, poor fuel
economy, engine overheat, etc.
8. WHEN USING GAS–CYLINDER TYPE LEAK DETECTION
INSTRUMENT;
(a) As a naked flame is used, first make sure that there are
no flammable substances nearby before using it.
(b) Be careful, as poisonous gas is produced when refrigerant
gas comes in contact with heat parts.
(c) Tighten the 0–ring fittings or the bolted type fittings to the
specified torque
4. WHEN CONNECTING MANIFOLD GAUGE;
(a) Be sure to connect the charging hose end with a pin to the
compressor charging valve.
(b) The letter ”D” engraved near the compressor service valve
indicates the high pressure side, and ”S”
indicates the low pressure side. Pay careful attention
when connecting the hose.
(c) Tighten hose by hand.
(d) To prevent loosening of connected hose, do not ap–
ply drops of compressor oil to the seat of connection.
HINT: After connecting the manifold gauge and the refriger-
ant container (service can), discharge any air in the hoses.
5. WHEN EVACUATING;
Approx. 15 minutes after removal, check the system for
leaks, then take at least another 15 minutes to make sure
the air is fully removed.
– AIR CONDTIONING General Information
AC–3
AIR CONDITIONING SYSTEM CIRCUIT
– AIR CONDTIONING Air Conditioning System Circuit
AC–4
AIR CONDITIONING SYSTEM CIRCUIT (Cont’d)
– AIR CONDTIONING Air Conditioning System Circuit
AC–5
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Discover the 1992 Toyota Corolla Service & Repair Manual, an essential resource for maintaining and repairing your Toyota Corolla. Whether you're a professional mechanic or a dedicated DIY enthusiast, this manual is a valuable asset for ensuring your vehicle remains in optimal condition.
This manual encompasses a range of 1992 Toyota Corolla models, including:
- Toyota Corolla DX Sedan 4-Door
- Toyota Corolla LE Sedan 4-Door
- Toyota Corolla DLX Sedan 4-Door
- Toyota Corolla DX Wagon 5-Door
- Toyota Corolla LE Wagon 5-Door
- Toyota Corolla DLX Wagon 5-Door
Contained within this manual are detailed, step-by-step instructions, along with diagrams and illustrations to assist you in a variety of repair and maintenance procedures. From routine oil changes to intricate engine overhauls, this manual provides comprehensive guidance.
Key features of the 1992 Toyota Corolla Service & Repair Manual:
- Comprehensive coverage of all major systems and components
- Troubleshooting guides for effective problem diagnosis and resolution
- Clear and concise instructions for easy comprehension
- Important safety precautions to prioritize your well-being
- Detailed specifications and torque values for precise repairs
Empower yourself with the knowledge and confidence to address any repair or maintenance task, preventing minor issues from escalating. Whether you're a professional mechanic or a DIY enthusiast, the 1992 Toyota Corolla Service & Repair Manual is an invaluable resource. Secure your copy today and ensure your Toyota Corolla operates smoothly for years to come.
